Safety-heel.



A. C. RIGHTOR.

SAFETY HEEL.

APPLICATION FILED JULY 22. m5.

Patented Apr. 18, 1916.

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THE COLUMBIA PLANDGRAPM CO., WASHINGTON. n. c.

ALBERT G. BIG'HTOR, F PITTSBURGH, PENNSYLVANIA.

SAFETY-HEEL.

Specification of Letters Patent.

Patented Apr. 18, 1916.

Application filed July 22, 1915. Serial No. 41,313.

. T 0 all whom it may concern:

, capable of being the anti-slipping device.

suitable resilient Be it known that I, ALBERT C. BIGHTOR, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Safety-Heels, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to anti-slipping devices for boots and shoes, particularly those thrown into and out of operative position to engage the surface walked upon at the will of the user, and has for its objects to provide a simple, inexpensive, practical, eflicient and convenient device of this character, one which is well adapted for use in connection with rubber and other resilient heels, and one which may be readily applied to an existing boot or shoe without other modification of the heel thereof than the removal of the usual number of liftsincidental to the application of a rubber heel or lift of ordinary form;

In the accompanying drawings Figure 1 is a longitudinal vertical section of a safety heel or auxiliary lift and associated devices constructed in accordance with the invention, a portion of the regular heel lifts and other parts of the shoe being shown in side elevation. Fig. 2 is a bottom plan view partly broken away. Fig. 3 is a section on the line -33, Fig. 1, showing the antislipping device in retracted or inoperative position. Fig. 4 is a similar view' showing the anti-slipping device in projected or operative position. Fig. 5 is a top view of the auxiliary lift. Fig. 6 is a perspective view of the plate associated with the auxiliary lift and carrying the operating means for Fig. 7 is a plan view of the insert or anchoring plate.

The complete device constituting the present invention comprises an auxiliary heel or outer lift 12, preferably of rubber or other material. and certain associated parts, said complete device being adapted for application to the regular'heel 13 of an ordinary boot or shoe in substitution for one or more of the outer lifts of said-regular heel in a manner similar to the application of the well-known rubber heels or lifts now in extensive use. Associated with the auxiliary lift and interposed between the same andthe heel 13 is a plate 14, preferably of metal. The plate 14 is provided on its under side with transversely arranged guide flanges 30 for a purpose presently to be explained. The flanges 30 are preferably formed integral with the plate 14, being struck up from the body of said plate. The auxiliary heel or lift 12, together with the plate 14, is secured to the heel 13, after the removal of the necessary number of lifts from said heel, by means of screws or nails 16 which pass through the holes 17 suitably disposed in the plate 14, said screws .or nails 16 entering the heel 13.

The creeper, calk, or antislipping device 21 preferably comprises a block or plate having a roughened outer surface or edge and is arranged for vertical movement in a slot-22 extending through the auxiliary lift 12 and arranged transversely thereof. When said auxiliary lift is composed of rubber or the like there is preferably embedded therein an anchoring plate 23 having a central opening 18 registering with the slot 22 in the lift 12, to receive the calk or antislipping device 21, thereby guiding said antislipping device for vertical movement and preventing lateral displacement thereof. The plate 23 is also preferably formed with suitably disposed openings 19 through which sections of rubber may pass to join the rubber together above and below said plate, the latter having also holes 20 through which the screws 16 pass in securing the outer lift 12 to the heel 13.

.The anti-slipping device or calk block 21 is moved upwardly into its inoperative position within the heel by means of a U- shaped wire spring 24 secured to the under side of the plate 14 adjacent the rear end thereof and passing through the anti-sliping, device 21, the free ends of said spring eing received in slotted openings in lugs 25 struck out. from the plate 14. Said spring 24 is received in a recess 26 formed in the upper surface ofthe auxiliary lift 12 and extending forwardly and rearwardly from the slot 22.

The means for projecting the anti-slipping device 21 downwardly intoits operative position against the tension of the spring 24, and for retaining saiddevicein said position, comprises a cam slide or, block 27 having a lower cam surface 28 engaging coeperating with an upper cam, surface 29 on the ant1-sl1pp1ng devlce 21. The cam and slide or block 27 is guided for lateral movement by the flanges 30 on the plate 14 which 7 extend into the slot 22, and the anti-slipping 7 device or calk-block 21 is guided in its vertical movements by pins 34-riveted to the plate 14 and received in rece'ssesat the ends of saidoalk block '21-, said pins also'serving as stops to limit the movements of the sliding cam block 27. v

The cam block 27 is operated to project or release the antislipping device 21 by means of a lever 31 pivoted adjacent its center, as

at 32, to the plate 14, and engaging at its springing into contact with the plate 14, by the user close to said lug,

when released of the device.

Thus the anti-slippingdevice or calk-block 21 may be positively retained anti-slipping device either in its inoperativeor housed position, or in its operative or projected lowered position, and the lever '31 will also be held positively in either position to which it. may be moved, and 'th when the calk-block is in its inoperative position.

The normal or inoperative position of the parts is as shown in Figs. 2, 3 and 6 and in full lines in Fig.1, in which position the I 21, under the influence of the spring 24, is lifted into a position entirely within the lift 12 and above the-lower surface thereof, so as to-be out of vengagement with'the surface walked on. "At this time the position of the cam block 27 is such as to permit such lifting of the antislipping device 21 by its spring 24, e. the high portions of the cam surface 28 are opposite low portions of the cam surface 29,

and vice versa. In order to project the anti- I slipping device into operative position, as

shown in Fig. 4 and in dotted lines in Fig.

1, for use on slippery surfaces, the forward end of the lever convenient point in front of the breast of the heel and beneath the instep, is moved transversely of the heel, thereby swinging said lever on itspivot 32, and moving the cam block 27 from the position shown'in,

Fig. 3 into 'thatshown in Fig. 4. During this'movement of the cam'block 27 engagement of the cam surface 28'with the cam into the extreme with a small lug 34 over' us cannot rattle about 31, which is extended to a surface 29 causes to be projected downwardly into operative position against the tension of the spring 24. I The cam surfaces 28' and 29 are'so formed that when the cam block 27 is moved position shown in Fig. 4,

interengagement of high portions of said the antislipping device 21" surfaces will 'eause'said antislipping device I to. be positively held in itsoperative position, upward thrust ofsaid antislipping device being transmitted through said cam block to the plate 14 and heel 13. Atthis time the lug34 will positively retain the lever in such position that said lever, acting through the pin or stud; 33 on the cam block 27, will lock said-block in place to hold the calk block in projected or operative position.

The guiding and anchoring plate 23, em-

bedded in the outer lift 12, and which is of a size or extent nearly equal to the lift 12,

serves primarily toanchor the heads of the nails or screws 16 and prevent them from pulling through the relatively soft material, as rubber, composing the said also serves to guide the anti-slipping device or calk-block in its vertical movements Having thus described my invention I claim and desire to secure by Letters Patent:

1. A device of the character described comprising a plate arranged for attachment to the heel of a boot or shoe, a rubber outer lift beneath saidplateprovided with a slot V extending therethrough from top to bottom,

aguiding and anchoring plate embedded in said resilient lift between tom thereof and having an extent nearly equal to said lift, said last-named plate be outer lift, but

the top and bot 1 lng disconnected from said first-nam d plate v and having'a slot registering with said first namedslot and having also an opening to receive .connecting'parts of rubber, and an; a

said slots anti-slipping device movable in into and out of operative position.

2. An anti-slipping device adapted for" attachment to the heel of a boot or shoe and i comprising a calk-blo'ck 'movable into [and p out of operative position, a

said calk-block, and a U-shaped wire spring attached'near its middle, to said plate and through said calk-' block, the said plate having lugs provided entered by the free having parts passing with slotted openings ends ofsaid spring. 7

' 3. An anti-slipping device adapted for attachment to the heel of a boot or shoe and comprising an outer heel lift, a plate, aver tieally movable calk-block carried by said plate, a horizontally sliding cam-block oooperating with said calk-block, and pins at: tached to said plate'and serving to limit the endwise movements of said cam block.

' 4. An anti-slipping tachinent to the heel of a boot or 'shoe' and comprising a plate,

plate carrying a calk-block vertically device adapted for atv movable relative to said plate, a sliding cam-block and cooperating spring for moving said calk-block vertically, and a spring lever for operating said cam block, said plate 5 being provided at the breast of the heel with a lug or stop for positively holding said 1ever in the operative and inoperative positions of said calk-block, said spring lever being adapted to be sprung so as to pass by said lugin moving it from one side thereof 13 to the other.

In testimony whereof I affix my signature.

ALBERT C. RIGHTOR.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner oi. Patents, Washington, D. G. 

